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中国电机工程学报 2009, 29(24) 1-5 DOI: ISSN: 0258-8013 CN: 11-2107/TM

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电力电子与电力传动

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	本文关键词相关文章
	无功补偿
	功率因数
	逆变器
	数字控制
	正弦脉宽调制
	本文作者相关文章
	单任仲
	尹忠东
	肖湘宁
	PubMed
	Article by Dan,L.Z
	Article by Yun,Z.D
	Article by Xiao,X.N

电压源型快速动态无功补偿器

单任仲，尹忠东，肖湘宁

电力系统保护与动态安全监控教育部重点实验室(华北电力大学)

摘要：提出一种新颖电压源型连续可调无功功率补偿器的控制策略，采用正弦脉宽调制(sinusoidal pulse width modulation，SPWM)电压源型逆变器(voltage source converter，VSC)直接调节补偿电抗上的电压，实现补偿器的连续可调感性无功功率输出。该补偿器克服了传统晶闸管控制电抗器(thyristor controlled reactor，TCR)的谐波问题，并且逆变器的最大工作容量仅为补偿容量的25%。结合晶闸管投切电容器(thyristor switched capacitor，TSC)可大大降低动态无功补偿部分的容量，并实现无功功率的连续双向调节。建立基于Matlab/Simulink的系统仿真模型，对控制策略进行仿真研究。最后设计制作高性能数字控制器，通过实验验证提出的控制策略是有效可行的。

关键词：无功补偿功率因数逆变器数字控制正弦脉宽调制

Rapidly Dynamic Var Compensator Based on Voltage Source Converter

SHAN Ren-zhong, YIN Zhong-dong, XIAO Xiang-ning

Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control (North China Electric Power University), Ministry of Education

Abstract: This paper proposed a novel strategy to control rapidly dynamic var compensator based on voltage source converter (VSC). The proposed compensator combines the sinusoidal pulse width modulation (SPWM) type inverter to regulate the voltage on the compensating inductor directly, so the continuous output of inductive reactive power is realized, which is suitable for the low and middle voltage distribution system. With this compensator, the harmonic problem of thyristor controlled reactor (TCR) is overcome, and the capacity of the inverter is only 25% of the rating capacity. Combined with thyristor switched capacitor (TSC) to realized bidirectional reactive power regulate, and the capacity of dynamic var could be reduced greatly. The system simulation model based on Matlab/Simulink is given, then the good performance digital controller is designed. Finally, the experimental results show that the proposed control strategy is feasible and efficient.

Keywords: var compensation power factor inverter digital control sinusoidal pulse width modulation

收稿日期 2008-07-14 修回日期 2008-08-28 网络版发布日期 2009-08-31

DOI:

基金项目:

“十一五”国家科技支撑计划重大项目(2007BAA12B03)。

通讯作者: 单任仲

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